Publisher’s Preface

This book has been produced using MTS Textform, an advanced computer word-processing system especially designed to improve editorial control over the text through consistent page-formating, pagination, and the cor­rection of errors prior to typesetting by the high-speed computerized APS-5 system. The system allows for quick reproduction of updated editions. Special thanks are due to Mr. David Holberton and the Textform Group and to Mr. Peter Buttuls of Integrated Graphics, Computing Services, University of Alberta, for their invaluable assistance in the publication of this book.